Improvement in oil-tanks



GEORGE w. GLASS. V Devices for Discharing Oil from Ta nk s.

Patented Oct. 24,1871.

UNITED STATES PATENT OFFIon.

GEORGE W. GLASS, OF PITTSBURG, ASSIGNOR TO HIMSELF AND WILLIAM J.BBUNDRED, OF OIL CITY, PENNSYLVANIA.

IMPROVEMENT IN OIL-TANKS.

Specification forming part of Letters Patent No. 120,263, dated October24, 1871.

To all whom it may concern:

Be it known that I, GEORGE W. GLASS, of Pittsburg, in the county ofAllegheny and State of Pennsylvania, have invented a certain new anduseful Improvement in Devices for Discharging Oil from Tanks, (the samebeing an improvement upon the devices for the same purpose for whichWilliam J. Brundred received Letters Patent bearing date January 17,1871, and reissued August 1, 1871;) and .I do hereby declare that thefollowing is a full, clear, and exact description thereof, referencebeing had to the accompanying drawing and to the letters of referencemarked thereon.

My invent-ion relates to the combination and arrangement of the deviceshereinafter described with an ordinary oil-tank, whereby oil may belongitudinal section of an oil-tank provided with my devices fordischarging oil from tanks. Fig. 2 is a vertical section of the same atline 3 of Fig. 1. Fig. 3 is a bottom view of the valve 6. Fig. 4 is atop view of the hinged cap h.

In the accompanying drawing, A represents a valve-stem passing downthrough the dome B to the bottom of a cylindrical and horizontaloiltank, 0, which tank is of ordinary construction and of the form nowcommonlyused for transporting oil. Tank 0 is provided with a man-hole,X, covered by a cap, 1. The upper portion of the stem A is provided withscrew-threads, which are fitted to screw-threads in the nut D, theexterior of which is furnished with screw-threads which screw into thering a secured on the top of the dome B. The stem A is provided with acollar, a, which is used for controlling the upward travel of the valve6. To the lower side of the tank 0 is secured a tubular casting, a, theopening of which is concentric to the opening of the ring a on the topof the dome B. The casting 4. is provided with ascreW-plug,j. The lowerend of the stem A and upper end;of the valve 6 is surrounded with ascreen, f, which is provided with a hinged cap, h, divided into twoparts, so that in removing the valve 6 from the tank they will be raisedand thrown back by the top of the valve striking against the under sideof the cap. By surrounding the valve 6 with the screen fthe valve willnever become inoperative by chips, bun gs, &c., getting between thevalve and its seat, and by passing the stem A down through the dome Bthe joints around and about the upper end or portion of the stem willnever leak. In all other respects my devices operate as, and have thesame advantages as, the devices described in the patent of William J.Brundred hereinbefore named, and to which reference is made.

What I claim as of my invention is- -1. The valvestem A passing downthrough the dome B of the tank O,'substantially as herein described, andfor the purpose set forth.

2. The detached nut 1), in combination with the valve 0 and its stem A,substantially as de scribed.

3. The screw f, provided with cap h, and used in combination with valve6, substantially as herein described, and for the purpose set forth.

GEO. W. GLASS.

Witnesses:

A. G. JoHNsroN, J AMIES J. JOHNSTON. (167)

